Safety Stock

[former_member224727]

As per my understanding safety stock behave just as information which we can set automatically through historical data or entering manually. I was thinking safety stock will not affect ATP check.

but at my current client place if you 100 KG stock in hand and safety stock is 110 KG. Now in this situation if you try to create sales order for 20 KG then system does not confirm qty & says item has no open qty. My client want to confirm sales order in this situation. They want if stock touch to safety level then it should plan for procurement/production but if we have stock in hand even under safety stock in this case also it should confirm qty to sales order. Can you help me to understand where should I maintain these kind of settings?

If safety stock itself behave like these then why we need minimum safety stock?

[Former Member · Accepted solution]

Hi Eric,

Please check the Availability check settings through OVZ9, for each business function (Sales Order. Delivery, Production Order, etc.,)...

Wherever applicable, Include the Safety stock as Available.

Example below -

Thanks

Senthil

[former_member224727 · Accepted solution]

We have same system setting as above screen shot by Senthil. So where else I'm missing setting? Why system doesn't consider stock in SO if it is below safety stock?

Even in MD04 also I can see system block safety stock from total available stock.

Reply appreciated.

[krishna_chandra5 · Accepted solution]

Hi,

     Confirm your parameters of scope of check as mentioned below

1. Checking rule : Defined in the MRP group (OPPR) assigned in the material master/ defined in the MRP plant parameters (OPPQ)
2. Availability check group assigned in the material master.

The scope of check must be the combination of these two parameters.

Check and revert back.

Regards,

Krishna Chandra

[Former Member · Accepted solution]

Hi Eric,

Thanks for the details...

Can we get your screenshots...

From the actual availability check screen (say from the Sales order or Delivery as applicable), kindly click the 'Scope of check' button... and capture the screenshot and attach.

Thanks

Senthil

[former_member224727 · Accepted solution]

Hi Krishna,

We don't use MRP group in material master.

There are lot of parameters in OPPQ, what should check there?

For material master I found X3 is availability check rule. What you want me to check now? Can you provide me SPRO path instead of transaction?

[former_member224727 · Accepted solution]

Thanks Senthil for this. Actually I checked as per your suggesting and found "include safety stock" was not checked for availability check. Earlier I was checking for PP rule, but found here system use SD rule in sales order.

So now correct my understanding, "Safety stock is just for information field. Availability & req checked and confirmed by "availability rule" config" Correct?

What else matters for stcok conformation to SO or ind req?

[Former Member · Accepted solution]

Hi Eric,

Thanks.

Wondering if you meant to say that the you identified the particular checking rule applicable (in this case, SD) --> you have included the 'safety stock' as available in OVZ9 --> and got your issue resolved.

Can you please confirm...?

The checking group entry that we make at the material master is a single key(say 02 or X3, etc.,);

• In the OVZ9 settings, we assign various stocks and transactions to be considered during availability check at different business processes (e.g., Production order creation , Release, Sales Order for MTS order, Sales Order for MTO order, Delivery, etc.,....);
• And the system performs the availability check for each of these business functions using the specific rule assigned.

The safety stock entry in Material master is still an important entry for the purpose of driving the material planning.

• And based on the OVZ9 settings, we can use the flexibility to say that the Safety stocks can be considered as available during ATP check for Sales Order or Delievey but not for Production order creation, etc.,... based on our specific requirements.

Please advise if this clarifies.

Thanks

Senthil

[former_member224727 · Accepted solution]

Thanks Senthil for quick reply. Actually I was not able to figure out system behavour because I was checking against PP rule instead of SD. Now it helps to understand system behavior.

Still there are few parameters which create question for me, like where we difere setting of "checking rule - PP/SD"? How my system knows PP for production order & SD for sales order?

[Former Member · Accepted solution]

Hi Eric,

Glad the clarifications helped.

Regarding the new questions... I would think, that the default checking rule assignments behind the Sales order/Delivery/etc., are pre-set by SAP, probably behind the Requirement class+Account assignment+Schedule line settings, etc., and I am not aware if we could change these assignments.

But, we have the options to assign/change the checking rules for Production order create/release using the OPJK settings.

Kindly close the thread, if this clarifies.

Thanks

Senthil

[krishna_chandra5 · Accepted solution]

Hi,

     In OPPQ, there will be an option called Dep Req Availability. Click on that and there you can assign a checking rule for the availability at the plant level. This in combination with availability group forms the scope of check where you have to maintain the required parameters.

Revert back in case of any queries. Close this thread if your doubt is cleared.

Regards,

Krishna Chandra

[former_member224727 · Accepted solution]

Thanks Senthil & Krishna. Both of your input help me to understand. I have last request from you.

Since I'm new in this area & if some one ask me to configure this availability rule in fresh implementation what are the steps I need to follow? Can you help me?

[krishna_chandra5 · Accepted solution]

Hi Eric,

     You can use the standard availability rules and groups, if you want you can create new ones also. These doesn't have any impact as these are only definitions, only the scope of check created by the combination decides the consideration of stock availability.The checking rule can be assigned in OPPQ if you want to use the same rule for the complete plant. If you want to use the rule for a specific set of materials create a MRP group (OPPR) with the specific checking rule and assign to those materials. Availability group can be directly assigned in the MRP 3 view.

Hope this clears....close this thread if you are satisfied.

Regards,

Krishna Chandra

[former_member224727 · Accepted solution]

Thanks to both of you for clarification. This really helps me to understand.

Closing this thread.

[krishna_chandra5]

Hi,

     May be you are confused with safety stock and reorder point. Safety stock is just a stock which will not be considered in the planning and consumed in any urgent requirements. Reorder point is the one which you can maintain and if the stock falls below that, the MRP will plan for the new proposals (Consumption based planning), for this the MRP type should be VB / VM.

Coming to your situation, Check the scope of check for your checking group and checking rule, then tick the safety stock check box if it is not ticked. I hope this helps.

Revert back in case of queries.

Regards,

Krishna Chandra